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Finding the Fourth Proportional to 18,663.93, 25,755.95 and 10,705.98

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Solution

The fourth proportional to 18,663.93, 25,755.95 and 10,705.98 is: 14,774.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,663.93 : 25,755.95 = 10,705.98 : x
  2. Step 2: Convert to fraction form
    18,663.93/25,755.95 = 10,705.98/x
  3. Step 3: Cross multiply
    18,663.93x = 25,755.95 × 10,705.98
  4. Step 4: Simplify right side
    18,663.93x = 275,742,632.05
  5. Step 5: Solve for x
    x = 275,742,632.05/18,663.93
  6. Step 6: Final answer
    x = 14,774.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.